The James Webb Space Telescope will let scientists study small, rocky planets around distant stars in more detail than ever before. After decades of work, it could head into orbit later this year.
When it comes to facing global warming, dealing with climate change and making informed choices for our cherished "project of civilization," we've been asking the wrong question, says Adam Frank.
Scientists are puzzled by a new image taken by NASA's Dawn spacecraft, which found two bright spots on the dwarf planet Ceres. The spots are noticeably brighter than other parts of the surface.